CN215688268U

CN215688268U - Ultrasonic scalpel

Info

Publication number: CN215688268U
Application number: CN202121476522.0U
Authority: CN
Inventors: 张军
Original assignee: Ansukang Medical Suzhou Co ltd
Current assignee: Ansukang Medical Suzhou Co ltd
Priority date: 2020-11-04
Filing date: 2021-06-30
Publication date: 2022-02-01
Anticipated expiration: 2031-06-30
Also published as: KR20240060714A; CN215688266U; AU2022371213A1; CA3234799A1; CN221431151U; CN113712633A; CN216317859U; CN113331917B; CN112237465A; EP4403120A1; WO2023066077A1; CN113331917A; WO2022095726A1; CN215688267U; JP2024537221A; CN215688269U

Abstract

The utility model discloses an ultrasonic scalpel, which comprises an ultrasonic scalpel handle and a cutter, wherein a torque adjusting component is arranged at the front part of a handle shell of the ultrasonic scalpel handle, and comprises a knob inner ring, a knob outer ring and an elastic component which is arranged between the knob inner ring and the knob outer ring and used for controlling the torque value between the knob inner ring and the knob outer ring within a set range. Simultaneously, this moment of torsion adjusting part is integrated on handle shell, has avoided needing to be equipped with the moment of torsion spanner in addition among the prior art and has caused a series of problems such as moment of torsion spanner easily loses, and it is more convenient to use.

Description

Ultrasonic scalpel

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an ultrasonic scalpel.

Background

The ultrasonic scalpel adopts ultrasonic energy to be used for hemostatic separation and tissue coagulation of soft tissues in various endoscopic surgeries and conventional surgeries. With the popularization of minimally invasive surgery, an ultrasonic surgical knife has become a conventional surgical instrument and is widely used.

At present, an ultrasonic scalpel system in the market mainly comprises a host, a handle, a cutter and a transducer, wherein the host is provided with an ultrasonic generator, the cutter can be installed only by means of an external torque wrench, the handle, the cutter and the transducer need to be assembled before an operation, and the ultrasonic scalpel system can be installed on the host and used. This type of ultrasonic knife system's part quantity is many, occupation space is big, and it is loaded down with trivial details to have the installation simultaneously, and the relative handle of installation back cutter still can take place to rock the phenomenon, and parts such as machine, transducer, cutter match a great deal of problems such as the dispersion is big, cause the uniformity of ultrasonic knife performance poor, and the fault rate is also higher.

Disclosure of Invention

The utility model aims to provide an ultrasonic scalpel integrated with a torque adjusting function.

In order to achieve the purpose, the utility model adopts the technical scheme that: an ultrasonic scalpel comprising an ultrasonic scalpel handle and a cutter, wherein the cutter is detachably mounted on the ultrasonic scalpel handle, the ultrasonic scalpel handle comprises a handle housing and a transducer assembly arranged in the handle housing, the transducer assembly at least comprises a transducer, the transducer has a luffing rod shaft extending in a front-back direction, the cutter at least comprises an outer tube and a cutter bar extending in the front-back direction, the cutter bar is arranged in the outer tube in a penetrating manner and fixed with the outer tube, a rear part of the cutter bar is in threaded connection with the luffing rod shaft, a torque adjusting assembly is arranged at a front part of the handle housing, and the torque adjusting assembly comprises:

the shaft axis of the knob inner ring, the shaft axis of the outer tube and the shaft axis of the amplitude transformer shaft are arranged in a collinear manner, the knob inner ring can be rotatably arranged on the handle shell around the shaft axis of the knob inner ring, and the outer tube is axially arranged in the knob inner ring in a penetrating manner and is circumferentially fixed relative to the knob inner ring;

the knob outer ring can be sleeved on the periphery of the outer side of the knob inner ring in a rotating manner around the axis of the knob outer ring;

the elastic assembly is arranged between the outer circumference of the knob inner ring and the inner circumference of the knob outer ring and is used for controlling the torque value between the knob inner ring and the knob outer ring within a set range.

Preferably, the elastic assembly comprises a tooth-shaped ring and two groups of elastic sheets, the two groups of elastic sheets are made of metal materials and are arc-shaped sheets capable of elastically deforming in the radial direction and the circumferential direction, the two groups of elastic sheets are connected in the circumferential direction and are arranged on the circumferential portion of the outer side of the knob inner ring in a surrounding mode, the tooth-shaped ring is fixedly arranged in the circumferential portion of the inner side of the knob outer ring in a matching mode, and the tooth-shaped ring is sleeved on the circumferential portion of the outer side of the two groups of elastic sheets in a matching mode.

Furthermore, the tooth-shaped ring is provided with a plurality of inner tooth parts which are distributed at intervals along the circumferential direction and extend inwards along the radial direction, a groove part is formed between every two adjacent inner tooth parts, one end part of each elastic sheet is provided with an elastic convex part, the elastic convex part protrudes outwards and extends along the radial direction of the elastic sheet, and the elastic convex part can be clamped in any groove part in a matching mode.

In some embodiments, the elastic protrusions of the two elastic sheets are arranged at an interval of 180 °, and an accommodating groove for accommodating the elastic protrusions is further arranged on an outer peripheral portion of the knob inner ring.

In some embodiments, the tooth ring further has a plurality of outer tooth portions circumferentially spaced apart and extending to protrude radially outward, the outer tooth portions and the inner tooth portions are alternately arranged in the circumferential direction, the groove portions are formed inside the outer tooth portions, and an inner peripheral portion of the knob outer ring is provided with a plurality of mounting groove portions for correspondingly fitting with the plurality of outer tooth portions.

In some embodiments, the spring plate has an arc-shaped spring plate main body, a plurality of positioning holes are formed in the spring plate main body, a plurality of positioning protrusions are formed on the outer circumference of the knob inner ring, and the positioning protrusions are fittingly inserted into the positioning holes.

Preferably, the knob inner ring is provided with an adjusting part located at the front part and an installation part extending backwards from the adjusting part, the installation part can be installed on the handle shell in a relatively rotating mode, and the elastic assembly and the knob outer ring are installed on the adjusting part.

Preferably, a plurality of positioning grooves are formed in the circumference of the inner side of the knob inner ring, the positioning grooves extend from front to back, an outer tube connector is fixedly arranged at the rear part of the outer tube, a plurality of convex ribs extending in the front-back direction are arranged on the circumference of the outer side of the outer tube connector, and the convex ribs are correspondingly clamped in the positioning grooves in a matched manner.

Preferably, the front portion of knob inner circle is provided with a plurality of open slots along circumference interval distribution, every the open slot radially runs through the lateral wall of knob inner circle and runs through the front portion of knob inner circle, the front portion of knob inner circle still is provided with spacing boss, the knob outer lane cover is established the front portion of knob inner circle and is located the rear of spacing boss.

In some embodiments, the cutter further includes a cutter protection sleeve rotatably sleeved on the outer peripheral portion of the outer tube, the inner peripheral portion of the cutter protection sleeve and the outer peripheral portion of the outer tube are hermetically arranged, and the cutter protection sleeve and the knob outer ring are fixed to each other and hermetically connected to each other.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the torque adjusting component is arranged at the front part of the handle shell of the handle of the ultrasonic scalpel, when the cutter is connected with the handle of the ultrasonic scalpel, the cutter can be directly connected by rotating the outer ring of the knob, and meanwhile, the torque value between the cutter and the amplitude transformer shaft of the transducer cannot be too large to cause the connecting screw to be twisted off or cause the damage of the transducer and influence on the normal use performance of the transducer in the connecting process. Simultaneously, this moment of torsion adjusting part is integrated on handle shell, has avoided needing to be equipped with the moment of torsion spanner in addition among the prior art and has caused a series of problems such as moment of torsion spanner easily loses, and it is more convenient to use.

Drawings

FIG. 1 is a schematic structural view of an ultrasonic surgical blade system of the present invention;

FIG. 2 is an exploded view of the ultrasonic surgical blade of the present invention;

FIG. 3 is a schematic view of the overall structure of the ultrasonic surgical blade handle of the present invention;

FIG. 4 is a perspective view of the cutting tool of the present invention;

FIG. 5 is an exploded view of the cutter of the present invention; wherein:

FIGS. 5a, 5b, 5c are a perspective view, a front view and a longitudinal cross-sectional view of the outer tube joint on the outer tube of the cutter, respectively;

FIGS. 5d and 5e are a perspective view and a longitudinal sectional view of the cutter guard, respectively;

FIGS. 5d 'and 5 e' are a perspective view and a longitudinal cross-sectional view, respectively, of a modified embodiment of the protective sheath for a cutting tool;

figures 5f, 5g, 5h, 5i are schematic longitudinal cross-sectional views, in whole or in part, of a knife with the jaws in an open condition;

FIGS. 5j and 5k are front and top views of the inner tube of the tool;

FIG. 6 is a schematic view showing the overall structure of the sheath of the handle of the ultrasonic scalpel according to the present invention; wherein: FIGS. 6a, 6b, and 6c are schematic rear, side, and front views, respectively, of a protective sheath of a housing;

FIG. 7 is an exploded view of the handle of the ultrasonic surgical blade of the present invention;

FIG. 8 is a schematic view of the internal structure of the ultrasonic surgical blade handle of the present invention;

FIG. 9 is a schematic view of the structure of the cutter, the connector and the driving mechanism of the present invention;

fig. 10 is a perspective view of the connector of the present invention, and fig. 10a and 10b are front and longitudinal sectional views thereof, respectively;

FIG. 11 is a schematic view of the internal structure of the present invention after the cutter is connected to the connector and the driving mechanism; 11a, 11b, 11c are respectively front view, front view and longitudinal section schematic diagrams of the adjusting nut;

FIG. 12 is a schematic view of the overall construction of a transducer assembly of the present invention;

FIG. 13 is an exploded view of the transducer assembly of FIG. 12;

FIG. 14 is a front view of the transducer assembly of FIG. 12, and FIG. 14a is a schematic cross-sectional view taken along line A1-A1 of FIG. 14; FIG. 14b is an enlarged view at D1 in FIG. 14;

FIG. 15 is a schematic structural view of the transducer assembly of the present invention when constrained in a handpiece housing;

FIG. 16 is a partial view of the handle of the ultrasonic surgical blade of the present invention; FIG. 16a is a cross-sectional view taken along line A2-A2 of FIG. 16; FIGS. 16b, 16c, 16d are diagrams illustrating, respectively, the deformable shape of the operating window on the handle housing of FIG. 16;

FIG. 17 is a front view of another embodiment of a transducer assembly of the present invention, and FIG. 17a is the front view of FIG. 17; FIG. 17B is a cross-sectional view taken along line B1-B1 of FIG. 17 a; FIG. 17c is a sectional view taken along line B2-B2 of FIG. 17B;

FIG. 18 is a schematic cross-sectional view of another embodiment of a transducer assembly of the present invention in a handpiece housing, with FIG. 18a showing a front view of the transducer housing;

FIG. 19 is an exploded view of the knob adjustment assembly of the present invention, wherein FIG. 19a is a view of the structure of the tooth ring; FIG. 19b is a schematic view of the structure of the rotating inner ring;

FIG. 20 is a schematic view of the handle and blade cooperation of the ultrasonic surgical blade of the present invention;

FIG. 21 is a schematic view of the internal structure of the ultrasonic surgical blade of the present invention, wherein the blade is inserted into the handle of the ultrasonic surgical blade but not yet attached; FIG. 21a is an enlarged schematic view at D2 in FIG. 21;

FIG. 22 is a schematic view of the internal structure of the ultrasonic surgical blade of the present invention with the blade inserted into the handle of the ultrasonic surgical blade and the attachment completed; FIG. 22a is a cross-sectional view taken along line C1-C1 of FIG. 22; FIG. 22b is an enlarged schematic view at D3 in FIG. 22 a;

FIG. 23 is a schematic view of the internal structure of the ultrasonic surgical blade of the present invention, wherein the blade is inserted into the handle of the ultrasonic surgical blade and the attachment is completed, and the blade inner tube is driven to move backward; FIG. 23a is a cross-sectional view taken along line C2-C2 of FIG. 23; FIG. 23b is an enlarged schematic view at D4 in FIG. 23 a;

wherein: 1. an ultrasonic scalpel handle;

11. a handle housing; 11a, shell-left; 11b, shell-right; 11c, a top cover; 11d, a perspective window; 11e, operating the window;

12. a transducer assembly; 121. a transducer housing; 1211. a front housing; 1212. a rear housing; 1213. a middle shell; 121a, a straight tooth ring; 121b, a knurled tooth portion; 121c, spline teeth; 122. a transducer; 1221. an amplitude variation rod shaft; 1222. a horn core; 1223. a first/second power connection lead; 123. a conductive member; 1231. a first conductive ring (first conductive portion); 1232. a second conductive ring (second conductive portion); 1233. a retainer ring; 1234. an insulating sleeve; 1235. positioning the boss; 124. a connecting screw; 125. a rubber pad; 126. a rubber ring;

13. a connector; 131. an installation cylinder part; 132. a resilient arm; 132a, a positioning projection; 133. a barrier convex ring; 134. a hollow channel;

14. a drive mechanism; 141. a slider; 141a, a sleeve portion; 141b, a sliding part; 142. a second elastic member (spring); 143. a third elastic member (wave spring); 144. adjusting the nut; 145. a sliding sleeve; 146. a handle; 147. a hinge;

15. a hold-down mechanism; 151. a pressure lever; 151a, a compression end; 151b, an operation end; 152. a rotating shaft; 153. a first elastic member (spring); 154. a pressing portion/gland;

16. a torque adjustment assembly; 161. an inner ring of the knob; 161A, mounting part; 161B, an adjusting part; 1611. a front connecting arm; 1612. an open slot; 1613. a straight tooth groove; 1614. a limiting boss; 1615. an annular groove; 1616. a containing groove; 1617. positioning the convex column; 162. an outer ring of the knob; 162a, a mating groove; 162b, knob protrusion; 163. a tooth-shaped ring; 1631. an outer tooth portion; 1632. an inner tooth portion; 1633. a groove part; 164. a spring plate; 164a, a spring plate main body; 164b, elastic protrusions; 164c, positioning holes;

17. a power connection element; 171. a first power connection element; 172. a second power connection element;

181. a controller group (power board/control board); 182. a display screen; 183. a function key; 184. a horn; 185. a front key; 186. a front key FPC group; 187. PCB sets (power/control boards);

19. a card sleeve;

10. a housing protective sleeve; 10a, a sealable zipper; 10b, a circular protective edge; 10c, dashed line;

2. a cutter; 21. an outer tube; 22. an inner tube; 22a, a kidney-shaped groove; 22b, an annular groove;

23. a cutter bar; 231. a cutter head; 24. an outer tube end; 241. an outer pipe joint; 241a, convex ribs; 241b, mounting grooves; 242. fixing a sleeve; 243. an NFC coil;

25. clamping jaws; 251. 252, a pin shaft; 26. a cutter protection sleeve; 261. a hand-pull wire; 27. a pin;

3. a power adapter; 31. a connecting wire; 4. a foot switch.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.

For convenience of description, the relative position of the components in the ultrasonic scalpel is described, and the above and following descriptions about the front and rear directions are defined by referring to the direction observed by the operator when holding the ultrasonic scalpel for operation, wherein the position of the ultrasonic scalpel acting on the operation part is the front, and the position of the ultrasonic scalpel close to the human body is the rear.

Referring to fig. 1, an ultrasonic scalpel system is shown, which includes an ultrasonic scalpel, and a power adapter 3 for providing a function to the ultrasonic scalpel; a foot switch 4 is optionally provided for operational control of the ultrasonic scalpel, such as opening and closing, wherein the ultrasonic scalpel comprises an ultrasonic scalpel handle 1, and a cutter 2 detachably mounted on the ultrasonic scalpel handle 1.

Referring to fig. 4 and 5, the cutter 2 includes an inner tube 22, an outer tube 21 and a cutter bar 23, where the inner tube 22 is disposed in a lumen of the outer tube 21 in a manner of relatively sliding along the front-back direction, the inner tube 22 and the outer tube 21 are disposed coaxially, a cutter limiting structure for limiting the relative sliding displacement of the inner tube 22 and the outer tube 21 along the axial direction is further disposed between the inner tube 22 and the outer tube 21, the cutter limiting structure specifically includes an upper waist-shaped groove 22a disposed on the inner tube 22 and a limiting pin 27 fixedly disposed on the outer tube 21, and the limiting pin 27 is inserted into the upper waist-shaped groove 22a in a sliding fit manner, so as to prevent the inner tube 22 from slipping forward or backward relative to the outer tube 21. The knife bar 23 is inserted into the lumen of the inner tube 22 in a manner that it can slide relatively along its longitudinal direction, and its rear portion is extended backward from the inner tube 22, and its front portion has a knife bar head 231. The cutter bar 23 and the outer tube 21 are connected through a limit pin 27 to be kept relatively fixed, so that the cutter bar 23 and the outer tube 21 can keep synchronous movement, and the synchronous movement mainly comprises synchronous rotation and synchronous forward and backward movement relative to the inner tube 22.

The cutter 2 further comprises a front jaw 25, which is rotatably disposed between the front portion of the inner tube 22 and the front portion of the outer tube 21 through a pin 251 and a pin 252, and the jaw 25 is driven to open or close relative to the cutter holder 231 during the relative sliding process of the inner tube 22 relative to the outer tube 21 in the forward and backward directions, so as to clamp or stop bleeding of soft tissue of a surgical object.

The rear portion of the outer tube 21 is further fixedly provided with an outer tube end 24, the outer tube end 24 includes an outer tube joint 241, an NFC coil 243 and a fixing sleeve 242, wherein the NFC coil 243 is installed at the rear portion of the outer tube joint 241, and the fixing sleeve 242 is fixedly sleeved at the rear portion of the outer tube joint 241 and covers the NFC coil 243. An outer circumference of the outer tube connector 241 is further opened with an installation groove 241b for accommodating the NFC coil 243. The front part of the outer pipe joint 241 is further provided with a plurality of ribs 241a distributed at intervals along the circumferential direction, and the ribs of the ribs 241a extend in the front-rear direction.

An annular groove 22b is also formed in the periphery of the rear portion of the inner tube 22 and is mainly used for matching with the ultrasonic scalpel handle 1 when the ultrasonic scalpel handle is connected.

The cutter 2 further comprises a cutter protection sleeve 26 slidably fitted over the outer peripheral portion of the outer tube 21, the inner peripheral portion of the cutter protection sleeve is movably and hermetically disposed with the outer peripheral portion of the outer tube 21, and the rear portion of the cutter protection sleeve has a pull wire 261 extending rearward for facilitating operation to remove the cutter protection sleeve 26.

Referring to fig. 7 to 23, the ultrasonic scalpel handle 1 comprises a handle housing 11 and a transducer assembly 12, wherein the handle housing 11 comprises a left housing 11a and a right housing 11b which are fixedly connected and matched, and a top cover 11c positioned at the top, the handle housing 11 is provided with a containing cavity, and the transducer assembly 12 can be rotatably contained in the containing cavity around the axis line of the transducer assembly 12.

Referring to fig. 12-16, the transducer assembly 12 includes a transducer housing 121 and a transducer 122 fixed to each other, the transducer housing 121 has a hollow cavity extending through the transducer housing 121 in a front-back direction, the transducer 122 is a unitary member and includes a horn shaft 1221 and a horn core 1222 sequentially arranged in an axial direction, the horn core 1222 is entirely accommodated in the hollow cavity of the transducer housing 121, and a front portion of the horn shaft 1221 extends out of the hollow cavity and is used for connecting to the cutter 2.

The transducer assembly 12 further includes a conductive member 123 fixed to the outer peripheral portion of the transducer housing 121, the conductive member 123 having an annular conductive portion, an axis of the conductive portion extending in a same line with an axis of the transducer assembly 12, and the transducer 122 being electrically connected to the conductive portion. Specifically, the conductive portions include a first conductive portion and a second conductive portion which are insulated from each other and are annular, the transducer 122 has two power connection wires 1223, the first power connection wire and the second power connection wire, and the two power connection wires are electrically connected to the two conductive portions respectively.

The two conductive portions are disposed at an interval in the axial direction of the transducer housing 121, in this embodiment, the conductive portion 123 includes two conductive rings, a first conductive ring 1231 and a second conductive ring 1232, both made of conductive material, and a blocking ring 1233 disposed between the first conductive ring 1231 and the second conductive ring 1232 and made of insulating material, the first conductive ring 1231 constitutes the first conductive portion, and the second conductive ring 1232 constitutes the second conductive ring 1232. The end of the first electrical connection wire 1223 is fixed to the first conductive ring 1231 for electrical connection, and the end of the second electrical connection wire 1223 is fixed to the second conductive ring 1232 for electrical connection.

The first conductive ring 1231, the second conductive ring 1232, and the blocking ring 1233 are relatively and fixedly sleeved on the outer circumference of the transducer housing 121, specifically, a circumferential limiting structure for limiting the relative rotation between each conductive ring and the blocking ring 1233 is disposed between each conductive ring and the blocking ring 1233, and a positioning structure for limiting the rotation of the conductive member 123 and the axial movement of the conductive member 123 is further disposed between the conductive member 123 and the transducer housing 121.

Here, referring to fig. 13 and 14, the transducer housing 121 includes a front housing 1211, a middle housing 1213, and a rear housing 1212, which are sequentially arranged in the front-rear direction, a rubber gasket 125 and a rubber ring 126 are provided between the front housing 1211 and the middle housing 1213 to achieve sealing, the rubber ring 126 is provided between the middle housing 1213 and the rear housing 1212 to achieve sealing, and the transducer 122 accommodated in the transducer housing 121 is sealed in the transducer housing 121. Conductor 123 is fixedly mounted on middle housing 1213 and is located at the front of rear housing 1212.

The conductive element 123 further includes an insulating sleeve 1234, the insulating sleeve 1234 is fixedly sleeved on the outer circumference of the middle casing 1213, the first conductive ring 1231, the blocking ring 1233 and the second conductive ring 1232 are commonly sleeved on the outer circumference of the rear pipe section of the insulating sleeve 1234, the front portion of the first conductive ring 1231 and the insulating sleeve 1234, the rear portion of the first conductive ring 1231 and the front portion of the blocking ring 1233, the rear portion of the blocking ring 1233 and the front portion of the second conductive ring 1232, and the rear portion of the second conductive ring 1232 and the front portion of the rear casing 1212 are mutually matched and positioned by the positioning boss 1235 and the groove, so that the conductive element 123 is fixed on the transducer casing 121.

Referring to fig. 7 and 15, the handle case 11 is further provided with an electrical connection element 17, the electrical connection element 17 is located at the circumferential outer side of the transducer assembly 12, the electrical connection element 17 abuts against the outer circumferential portion of the transducer housing 121 and abuts against the conductive portion, specifically, the electrical connection element 17 includes a first electrical connection element 171 and a second electrical connection element 172 that are independent from each other, the first electrical connection element 171 and the second electrical connection element 172 are both made of a metal material and have certain elasticity along the length direction thereof, the first electrical connection element 171 and the second electrical connection element 172 are arranged at intervals along the front-back direction of the handle case 11, the first electrical connection element 171 abuts against the outer circumferential portion of the first conductive ring 1231 along the radial inward direction of the transducer housing 121, and the second electrical connection element 172 abuts against the outer circumferential portion of the second conductive ring 1232 along the radial inward direction of the transducer housing 121. During the process of rotating the whole transducer assembly 12 around its own axis relative to the handle housing 11, the first electrical connection element 171 and the first conductive ring 1231, and the second electrical connection element 172 and the second conductive ring 1232 are in contact with each other all the time and are electrically connected.

Referring to fig. 7, in the present embodiment, the ultrasonic surgical blade handle 1 further includes a controller group 181 for controlling the operation state of the transducer 122, the controller group 181 is disposed in the handle housing 11 above the transducer assembly 12, and the electrical connection element 17 is fixed to the lower portion of the controller group 181, so that the electrical connection element 17 can abut downward on the outer peripheral portion of the transducer assembly 12 to maintain the electrical connection more stably.

The forward horn shaft 1221 of the transducer 122 is provided at its forward end with a coupling screw 124 for releasable coupling with the rear of the cutter shaft 23 of the cutter 2 by a threaded connection.

Referring to fig. 7 to 11, the ultrasonic surgical blade handle 1 further includes a connector 13, the connector 13 has a hollow channel 134 for the inner tube 22 to slidably penetrate from front to back, the connector 13 has a plurality of positioning protrusions 132a extending from the inner side surface of the connector 13 radially and inwardly, all the positioning protrusions 132a are circumferentially spaced, and all the positioning protrusions 132a are relatively slidably engaged in the annular groove 22b at the rear of the inner tube 22 in the circumferential direction, so that when the connector 13 is driven to move, the inner tube 22 is driven to move back and forth relative to the knife bar 23 and the outer tube 21, and the jaws 25 are correspondingly opened or closed.

Specifically, referring to fig. 10, the connector 13 has a mounting cylinder portion 131 and a connecting cylinder portion 132 located in front of the mounting cylinder portion 131 and used for connecting with the inner pipe 22, a barrier convex ring 133 with a larger outer diameter is formed at a position where the mounting cylinder portion 131 meets the connecting cylinder portion, the connecting cylinder portion 132 has a plurality of elastic arms 132 arranged at intervals along the circumferential direction, the rear ends of the elastic arms 132 meet the mounting cylinder portion 131, and a positioning protrusion 132a is provided on the inner side surface of the front end of part or all of the elastic arms 132. In this embodiment, the elastic arms 132 are provided with four elastic arms 132 distributed at equal intervals along the circumferential direction, wherein the inner side surfaces of the front ends of two elastic arms 132 which are oppositely arranged are provided with positioning protrusions 132a, and the inner side surfaces of the front ends of the other two elastic arms 132 are not provided with positioning protrusions 132 a. When the inner tube 22 is connected to the connector 13, the two positioning projections 132a are simultaneously caught in the annular groove 22b, so that the inner tube 22 is axially restrained with respect to the connector 13. The inner tube 22 is rotatable relative to the connector 13.

Referring to fig. 7 to 11, the ultrasonic-surgical-blade handle 1 further includes a pressing mechanism 15 for restraining the positioning protrusion 132a in the annular groove 22b, the pressing mechanism 15 includes at least a pressing rod 151, the pressing rod 151 is rotatably provided on the handle housing 11, the pressing rod 151 has a pressing end 151a for pressing against the outer peripheral portion of the elastic arm 132, and the pressing mechanism 15 further includes a first elastic member 153 for providing a force required to move the pressing end 151a toward the elastic arm 132.

In this embodiment, the pressing mechanism 15 has two sets disposed oppositely to restrict the two sets of positioning protrusions 132a disposed oppositely to the annular groove 22b at two opposite sides of the connector 13, respectively, to ensure stable connection of the inner tube 22 and the connector 13. Here, the two sets of pressing mechanisms 15 are provided on the outer side in the circumferential direction of the connector 13 symmetrically with respect to the axial center line of the connector 13.

In each set of pressing mechanisms 15, the pressing rod 151 extends in the front-rear direction, the middle of the pressing rod 151 is rotatably disposed on the handle housing 11 through the rotating shaft 152, the rotating shaft 152 extends in the up-down direction, the pressing end 151a is located at the front end of the pressing rod 151, the first elastic member 153 is a spring, the pressing end 151a forms a column, a receiving slot is opened therein, the spring of the first elastic member 153 is partially received in the receiving slot, and the other end of the spring abuts against the inner wall of the handle housing 11.

An operating end 151b is formed at the rear end of the pressing rod 151, and in the process of pinching the operating ends 151b at two sides, the two operating ends 151b move towards each other, and the two pressing ends 151a move towards opposite directions to be away from the elastic arm 132, so that the pressing on the elastic arm 132 can be released, when the tool 2 is applied with a force forwards, the inner wall of the annular groove 22b can be enabled to press the front end of the elastic arm 132, and the positioning protrusion 132a is enabled to be disengaged from the annular groove 22b, so that the inner pipe 22 is enabled to be detached from the connector 13.

A transducer restraining mechanism for restraining the transducer assembly 12 from rotating around the axis thereof is further arranged between the handle housing 11 and the transducer assembly 12, and the transducer restraining mechanism is mainly used for restraining the transducer assembly 12 from rotating when the cutter bar 23 of the cutter 2 is connected with the horn shaft 1221 in the transducer assembly 12, so that the cutter bar 23 is connected with the horn shaft 1221 by rotating the cutter 2 and screwing. The transducer constraint mechanism comprises two groups of operation members, wherein the two groups of operation members are respectively positioned in the containing cavity of the handle shell 11 and are respectively arranged at two opposite sides of the transducer assembly 12, each group of operation members is provided with a pressing part 154 used for pressing against the periphery of the outer side of the transducer assembly 12, and a constraint structure used for limiting the relative rotation of the pressing part 154 and the periphery of the outer side of the transducer shell 121 is arranged between the inner side of the pressing part and the periphery of the outer side of the transducer shell 121. The operating member is movably provided on the handle housing 11 such that the pressing portion 154 is movably provided toward or away from the transducer assembly 12, and an operating window 11e for driving the operating member to move is further provided on the handle housing 11.

In this embodiment, the pressing rod 151 constitutes the above-mentioned operating member, the pressing portion 154 is fixedly disposed on the operating end 151b of the pressing rod 151, the pressing portion 154 is specifically disposed as an arc-shaped pressing cover, the pressing cover 154 covers the operating window 11e on the inner side of the handle housing 11, and the pressing cover 154 can be applied with force through the operating window 11e, so as to drive the pressing rod 151 to rotate, and simultaneously, constrain the transducer assembly 12 and release the pressing of the elastic arm 132 on the connector 13. The operation window 11e may be in the form shown in fig. 16b to 16d or in another form not shown, in addition to the form shown in the present embodiment.

The constraining structure disposed between the inner side of the pressing portion 154 and the outer side of the transducer housing 121 may be a positioning structure disposed between the outer side of the transducer housing 121 and the inner side of the pressing portion 154 and capable of being matched with each other to position the transducer housing 121 circumferentially, or a friction increasing structure disposed between the outer side of the transducer housing 121 and the inner side of the pressing portion 154 and used for increasing friction force therebetween to limit rotation of the transducer housing 121. In this embodiment, as shown in fig. 12 to 15, the constraining structure is a mutually-matched tooth meshing structure, specifically, a straight toothed ring 121a is provided on the outer peripheral portion of the front housing 1211 of the transducer housing 121, and a plurality of similar straight teeth are also provided on the inner side surface of the pressing portion 154, so that when the pressing covers 154 on both sides are pressed, the straight teeth on the two pressing covers 154 mesh with the straight toothed ring 121a on the transducer housing 121 to achieve mutual positioning, thereby constraining the overall rotation of the transducer assembly 12.

Fig. 17 shows another embodiment of the restraining structure, in which a ring of knurled teeth 121b is disposed on the front portion of the transducer housing 121, the inner side surface of the gland 154 is only required to be a surface with a large friction force, and the gland 154 on both sides can be pressed to restrain the entire rotation of the transducer assembly 12 by the friction force. Fig. 18 shows another embodiment of the constraining structure, in which the front of the transducer housing 121 is provided with spline teeth 121c, and correspondingly, the inner side of the gland 154 is provided with correspondingly configured spline teeth.

Referring to fig. 7 to 11, the ultrasonic-surgical-blade handle 1 further includes a driving mechanism 14 for driving the connector 13 to move back and forth so as to move the inner tube 22 back and forth relative to the outer tube 21, and the driving mechanism 14 includes at least:

and a slider 141, the slider 141 being slidably provided on the handle case 11, the slider 141 being connected to the connector 13. Specifically, the slider 141 includes a sliding portion 141b and a sleeve portion 141a arranged in an L-shape, wherein the sleeve portion 141a is relatively slidably fitted over the mounting cylinder portion 131 of the connector 13 by a sliding sleeve 145, and the sliding portion 141b extends in the front-rear direction and is slidably provided in the handle housing 11 in the front-rear direction;

a second elastic member 142, here embodied as a spring, the second elastic member 142 being disposed between the handle housing 11 and the rear portion of the sliding portion 141b and serving to provide a force required for the forward movement of the slider 141;

a handle 146, the handle 146 being pivotally mounted on the handle housing 11 about a pivot, an operating portion of the handle 146 being located outside the receiving cavity of the handle housing 11, and a portion of the handle 146 being located inside the receiving cavity of the handle housing 11;

a linkage assembly disposed between the handle 146 and the slider 141 and configured to drive the slider 141 back and forth when the handle 146 is rotated. Here, the linkage assembly is a mechanism including a hinge 147 to convert rotation of the actuating handle 146 into sliding of the slider 141.

The driving mechanism 14 further includes an adjustable adjusting nut 144 disposed at the rear of the connector 13, a third elastic member 143 disposed between the adjusting nut 144 and the mounting cylinder 131 for urging the adjusting nut 144 and the mounting cylinder 131 to move away from each other in the front-rear direction, wherein the third elastic member 143 is a wave spring fitted on the mounting cylinder 131, and the sleeve portion 141a of the slider 141 is confined between the third elastic member 143 and the stopper convex ring 133. By rotating the adjustment nut 144, the wave spring can be pressed in different states, so that different amounts of force need to be applied to move the sleeve portion 141a rearward relative to the connector 13. The structure of the adjusting nut 144 is shown in fig. 11a to 11c, an outer periphery of the adjusting nut is provided with an outer-diameter knurl 144a and a hexagon 144b, the adjusting nut 144 can be adjusted in a manner of hand adjustment or wrench adjustment, 1 small hole 144c is formed in the adjusting nut, glue is dispensed in the small hole to prevent loosening after installation and adjustment are completed, and of course, a plurality of small holes 144c can be arranged in other embodiments.

Referring to the drawings, a torque adjustment assembly 16 is further provided at the front of the handle housing 11, and the torque adjustment assembly 16 can prevent the torque from being too large when the tool bar 23 is mounted on the horn shaft 1221 of the transducer assembly 12, so as to prevent damage to the transducer 122 during mounting. Referring to fig. 19, the torque adjustment assembly 16 includes:

the shaft axis of the knob inner ring 161, the shaft axis of the outer tube 21 and the shaft axis of the amplitude transformer shaft 1221 are arranged in a collinear manner, the knob inner ring 161 is rotatably arranged on the handle shell 11 around the shaft axis of the knob inner ring 161, and the outer tube 21 axially penetrates through the knob inner ring 161 and is circumferentially fixed relative to the knob inner ring 161;

a knob outer ring 162, wherein the knob outer ring 162 is rotatably fitted around the outer circumference of the knob inner ring 161 around its axis;

and an elastic member provided between an outer circumferential portion of the knob inner ring 161 and an inner circumferential portion of the knob inner ring 161 for controlling a torque value between the knob inner ring 161 and the knob outer ring 162 within a set range.

Specifically, referring to fig. 19, the elastic assembly includes a toothed ring 163 and two sets of elastic sheets 164, each set of elastic sheets 164 is made of a metal material and is an arc sheet capable of elastically deforming in the radial direction and the circumferential direction, the two sets of elastic sheets 164 are connected in the circumferential direction and are arranged around the outer circumference of the knob inner ring 161, the toothed ring 163 is arranged in the inner circumference of the knob outer ring 162 in a fixed fit manner, and the toothed ring 163 is arranged on the outer circumference of the two sets of elastic sheets 164 in a fit manner.

The tooth ring 163 has a closed annular shape, and has a plurality of inner teeth 1632 distributed at intervals in the circumferential direction and extending inward in the radial direction, a groove 1633 is formed between two adjacent inner teeth 1632, where the tooth ring 163 further has a plurality of outer teeth 1631 distributed at intervals in the circumferential direction and extending outward in the radial direction, all the outer teeth 1631 and all the inner teeth 1632 are arranged alternately in the circumferential direction, the inner side of the outer teeth 1631 forms a groove 1633, and the outer side of the inner teeth 1632 also forms a groove. In this embodiment, the external teeth 1631 and the internal teeth 1632 have the same shape and size. A plurality of mounting groove portions 162a for engaging with all the outer teeth 1631 are provided on the inner peripheral portion of the knob outer ring 162 so as to limit the tooth ring 163 in the circumferential direction.

Each spring plate 164 has a curved spring plate main body 164c and an elastic protrusion 164b located at one end of the spring plate main body 164c, the elastic protrusion 164b can be fittingly engaged with any one of the groove portions 1633, and the two elastic protrusions 164b on the two spring plates 164 are arranged at an interval of 180 °.

The knob inner ring 161 has an adjusting portion 161B at the front and a mounting portion 161A extending backward from the adjusting portion 161B, the mounting portion 161A is relatively rotatably mounted on the handle housing 11 and has a cylindrical barrel 1618 thereon and two limit retainers 1619 spaced apart from and located at the front of the barrel 1618, an annular groove is formed between the two limit retainers 1619 for the front of the handle housing 11 to be engaged therein, so that the knob inner ring 161 is axially positioned and can rotate relative to the handle housing 11. The elastic member and the knob outer 162 are mounted on the adjustment portion 161B.

The rear portion of the adjusting portion 161B is provided with an

annular groove

1615, and 2 accommodating grooves 1616 recessed from the bottom wall of the annular groove 1615 along the radial direction, and the bottom wall of the annular groove 1615 is further fixedly provided with a plurality of positioning bosses 1617, where two pairs of positioning bosses 1617 are provided, and each pair is 2; two positioning holes 164c are formed in the elastic sheet main body 164c of each elastic sheet 164, the elastic sheet 164 is clamped in the annular groove 1615, the elastic convex portion 164b of the elastic sheet corresponds to the accommodating groove 1616, and the positioning boss 1617 is matched with the positioning holes 164c to position the elastic sheet 164.

A plurality of positioning grooves 1613 are formed on the inner circumference of the knob inner ring 161 close to the mounting portion 161A, all the positioning grooves 1613 extend from front to back, and a plurality of ribs 241A provided on the outer tube joint 241 at the rear of the outer tube 21 can be correspondingly engaged with the plurality of positioning grooves 1613, so that the cutter 2 and the knob inner ring 161 are positioned in the circumferential direction and can rotate synchronously.

The front portion of the knob inner ring 161 is provided with a plurality of opening grooves 1612 distributed at intervals along the circumferential direction, each opening groove 1612 radially penetrates through the side wall of the knob inner ring 161 and penetrates through the front portion of the knob inner ring 161, the front portion of the knob inner ring 161 is further provided with a limiting boss 1614, the knob outer ring 162 is sleeved on the front portion of the knob inner ring 161 and is located at the rear portion of the limiting boss 1614, due to the design of the plurality of opening grooves 1612, on one hand, the tooth-shaped ring 163 and the knob outer ring 162 can be conveniently installed on the adjusting portion 161B, and on the other hand, the adjusting portion 161B has certain elasticity. A plurality of knob protrusions 162b are further provided on the outer circumference of the knob outer 162 to facilitate the user's rotation operation.

The appearance of the cutter protection sleeve 26 of this embodiment is the same with the shape of the knob outer ring 162, and can be fittingly wrapped on the outer periphery of the knob outer ring 162 to form the seal for the handle shell 11 from the front side, so as to avoid the contamination to the inside of the ultrasonic scalpel handle 1 caused by the infiltration of tissue fluid and blood stain into the handle knob in the operation process. The knife guard 26 may also be designed as in fig. 5d ', 5 e' which can be inserted from the front into the middle of the knob outer ring 162 to achieve a seal at the front side of the handle housing 11. The cutter guard 26 is made of a highly elastic rubber such as natural rubber or polyurethane or other highly elastic plastic material.

Referring to fig. 2, the ultrasonic scalpel handle 1 further includes a sheath 10 covering the handle sheath 11, and the main body of the sheath 10 is conformed to the shape of the handle sheath 11 and elastically covers the outer periphery of the handle sheath 11. The protective sheath 10 of the outer shell can be made of two different transparent rubber materials, namely high elasticity or common elastic materials, the front end of the protective sheath 10 of the outer shell can be provided with a matching hole, the periphery of the hole is provided with a circular protective edge 10b which can prevent the protective sheath 10 of the handle from being torn when being installed or disassembled, the middle of the dotted line 10c can be separated (arrow direction in the figure), the dotted line is separated during assembly, so that the blockage of the handle grip 146 can be avoided, the position of the dotted line is provided with a sealable zipper 10a, and the zipper structure can be replaced by a buckling edge structure. After the handle is assembled, the zipper is pulled up to seal the handle. The set of the cleaning tool is used before an operation, can be discarded after the operation, and can effectively prevent blood stains and dirt from entering the handle, so that the handle is difficult to clean.

Referring to fig. 20 to 23, the method for attaching, detaching and using the ultrasonic scalpel according to the present embodiment is briefly described as follows:

referring to fig. 20, the blade 2 and the ultrasonic-surgical-blade handle 1 are not yet mounted, and they can be stored separately. During installation, the cutter 2 is inserted into the handle 1 of the ultrasonic scalpel from front to back, the cutter 2 and the knob inner ring 161 are matched with each other, so that the knob inner ring 161 automatically rotates and aligns, the convex rib 241a at the rear part of the cutter 2 is correspondingly matched with the positioning groove 1613 on the knob inner ring 161 relatively, the cutter 2 and the knob inner ring 161 are positioned in the circumferential direction, and the cutter 2 is inserted into the handle backwards continuously. As shown in fig. 21, the rear part of the cutter 2 has been inserted into the handle housing 11 but the attachment has not been completed.

The operator simultaneously pinches the pressing portions 154 from the left and right sides of the handle housing 11 with one hand, so that the inner peripheral surfaces of the pressing portions 154 are engaged with the spur gear 121a at the front portion of the transducer assembly 12, thereby restraining the transducer assembly 12 to restrict the rotation thereof, and simultaneously lifting the pressing end 151a at the front portion of the pressing rod 151 outward away from the connector 13, thereby releasing the pressing of the elastic arm 132. Of course, this operation can be performed and maintained before the tool 2 is inserted.

Then, when the cutter 2 is stopped from moving backwards, the rear portion of the cutter bar 23 touches the horn shaft 1221, and the knob outer ring 162 is rotated to drive the cutter 2 to rotate synchronously, so that the cutter bar 23 is gradually connected to the horn shaft 1221 through the connecting screw 124 in a threaded manner. In the process of rotating the knob outer ring 162, after the connection between the cutter bar 23 and the horn shaft 1221 is completed, when the knob outer ring 162 is further rotated, the elastic component between the knob inner ring 161 and the knob outer ring 162 enables the two to move relatively, so that the cutter 2 cannot be driven to rotate synchronously, and the transducer 122 is prevented from being damaged.

Meanwhile, during the backward movement of the tool 2, the rear portion of the inner tube 22 is gradually inserted into the hollow passage 134 of the connector 13 and acts on the slope of the front side of the positioning projection 132a inside the elastic arm 132 and pushes the elastic arm 132 outward until the inner tube 22 moves backward until the positioning projection 132a snaps into the annular groove 22b, and the inner tube 22 is mounted on the connector 13.

Subsequently, the pressing of the pressing portions 154 by the two sides is released, and the pressing ends 151a of the front portion of the pressing rod 151 are reset by the springs 153 to move toward the connector 13, so that the pressing ends 151a of the two sides press against the outer sides of the elastic arms 132, thereby allowing the positioning protrusions 132a to be restrained in the annular grooves 22b and preventing the inner tube 22 from being disengaged from the connector 13. At the same time, the press 154 moves away from the transducer assembly 12, also releasing the constraint on the transducer assembly 12. In this way, the mounting of the tool 2 is completed, as shown in fig. 22.

When the cutter 2 is removed, the operator simultaneously pinches the pressing portions 154 from the left and right sides of the handle housing 11 with one hand, and then rotates the cutter 2, and after the cutter bar 23 on the cutter 2 is disconnected from the transducer 122, the cutter 2 can be pulled out forward, thereby completing the removal of the cutter 2. The assembly and disassembly processes of the cutter 2 are simple and convenient.

During the use of the ultrasonic scalpel, referring to fig. 23, the user can dial the knob outer ring 162 to adjust the angle of the cutter 2; in the process of performing an operation, an operator holds the handle 146, the cutter 2 has two different working states in the process of driving the handle 146 to rotate, at the initial stage of rotation of the handle 146, the slider 141 moves backwards against the acting force of the second elastic part 142, the slider 141 simultaneously passes through the wave spring of the third elastic part 143 to the adjusting nut 144 to drive the connector 13 to move backwards, the inner tube 22 is driven to move backwards relative to the outer tube 21, the jaw 25 is driven to be in contact with the cutter bar head 231, the jaw closing operation is realized at this stage, and the operations such as clamping soft tissues can be realized at this stage; when the handle 146 is further rotated, the slider 141 continues to press the second elastic member 142, and the second elastic member 142 is compressed and forms a spring pressure, so that the inner tube 22 is further pulled backward, and the jaws 25 are further closed to form a clamping force, which can be used for cutting and separating soft tissue and hemostasis operations. After the operation is completed, the components are reset by the plurality of elastic members by releasing the handle 146. When the handle 146 is pressed to drive the connector 13 and the inner tube 22 to move back and forth, so that the jaws 25 open and close, the pressing end 151a always keeps pressing against the elastic arm 132, thereby ensuring stable connection between the inner tube 22 and the connector 13.

Referring to fig. 7 and 8, the ultrasonic scalpel handle 1 also has the following components or circuit arrangements: the top of the handle shell 11 is provided with a display screen 182 which is covered by the perspective window 11d and used for displaying information required to be indicated, and one side of the display screen 182 is provided with a function key 183; and a controller group 181 on the top of the handle shell 11, which is electrically connected with the power connection element 17, has a short wire path and low electromagnetic radiation. The handle of the handle housing 11 is provided with a PCB group 187, the front part of the handle is also provided with a front key 185, and the handle housing 11 is also provided with a horn 184 and a front key FPC group 186. The lower part of the grip of the handle housing 11 is provided with a ferrule 19 for protecting the elements of the connection line 31 for detachably connecting the power adapter 3.

After the ultrasonic scalpel handle 1 is connected with the power adapter 3 and then is connected with the power of the power adapter 3, the front key 185 and the function key 183 are excited to check the system condition, the horn 184 which excites the front key 185 will send out an excitation prompt tone to press the function key 183, at this time, the handle NFC is communicated with the cutter NFC chip, the tool is subjected to code recognition, the output power is matched according to the code of the tool, after the communication matching is completed (after the tool is installed, a main control chip in a handle successfully handshakes with a tool NFC chip to establish communication, and various tool bit information in the NFC chip is read, including but not limited to product ID, used times, tool bit working power, tool bit working frequency and the like, after the information is successfully read and is effective, the main control chip in the handle judges that the tool bit is an effective tool bit, the matching program is considered to be completed, and the system can enter a standby mode to wait for exciting work.), and the system can be used for performing surgical operation. The operator may select the operational mode, which is viewable on the display screen 182, via the function keys 183. When the system is out of order, the horn 184 will send out alarm prompt sound, and the display 182 will prompt the fault code.

When soft tissue is treated, the front key 185 is excited, electricity of the power plate is transmitted to the amplitude variation rod shaft 1221 ceramic chip of the transducer 122 through the control plate, the ceramic chip generates high-frequency ultrasonic vibration, the ultrasonic vibration is amplified and transmitted to the cutter bar 23 through the amplitude variation rod shaft 1221, and therefore cutting of tissue is achieved, (the key on the front key 185 is a high-power key and mainly used for cutting tissue, the key on the lower key is a low-power key and mainly used for blood vessel occlusion), when the tissue is cut off or the blood vessel occlusion is achieved, the front key 185 is stopped to be excited, the handle 146 is released, the forceps holder 25 is reset and opened, and the closing and opening cycle is completed. The above procedure is repeated several times to complete the operation (there are also cases where the front button 185 is activated to cut without closing the forceps 25, which is not separately described).

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An ultrasonic surgical blade comprising an ultrasonic surgical blade handle and a cutting tool removably mounted to the ultrasonic surgical blade handle, wherein the ultrasonic surgical blade handle comprises a handle housing and a transducer assembly disposed in the handle housing, the transducer assembly comprising at least a transducer having a horn axis extending in a forward-rearward direction, the ultrasonic surgical blade characterized in that: the cutter at least comprises an outer tube and a cutter bar, the outer tube and the cutter bar extend in the front-back direction, the cutter bar penetrates through the outer tube and is fixed with the outer tube, the rear part of the cutter bar is in threaded connection with the amplitude variation rod shaft, a torque adjusting assembly is arranged at the front part of the handle shell, and the torque adjusting assembly comprises:

2. The ultrasonic surgical blade of claim 1, wherein: the elastic assembly comprises a tooth-shaped ring and two groups of elastic sheets, the two groups of elastic sheets are made of metal materials and are arc-shaped sheets capable of elastically deforming in the radial direction and the circumferential direction, the two groups of elastic sheets are connected in the circumferential direction and are arranged on the circumferential portion of the outer side of the knob inner ring in a surrounding mode, the tooth-shaped ring is fixedly arranged in the circumferential portion of the inner side of the knob outer ring in a matching mode, and the tooth-shaped ring is sleeved on the circumferential portion of the outer side of the two groups of elastic sheets in a matching mode.

3. The ultrasonic surgical blade of claim 2, wherein: the tooth-shaped ring is provided with a plurality of inner tooth parts which are distributed at intervals along the circumferential direction and extend inwards along the radial direction, a groove part is formed between every two adjacent inner tooth parts, one end part of each elastic sheet is provided with an elastic convex part, the elastic convex parts extend outwards along the radial direction of the elastic sheet in a protruding mode, and the elastic convex parts can be clamped in any groove part in a matched mode.

4. The ultrasonic surgical blade of claim 3, wherein: the elastic convex parts in the two elastic sheets are arranged at an interval of 180 degrees, and the peripheral part of the outer side of the knob inner ring is also provided with an accommodating groove for accommodating the elastic convex parts.

5. The ultrasonic surgical blade of claim 3, wherein: the tooth ring is further provided with a plurality of outer tooth parts which are distributed at intervals along the circumferential direction and extend outwards in a protruding mode along the radial direction, the outer tooth parts and the inner tooth parts are alternately arranged along the circumferential direction, the groove parts are formed on the inner sides of the outer tooth parts, and a plurality of installation groove parts which are used for being matched with the outer tooth parts correspondingly are arranged on the circumference of the inner side of the knob outer ring.

6. The ultrasonic surgical blade of claim 2, wherein: the elastic sheet is provided with an arc-shaped elastic sheet main body, a plurality of positioning holes are formed in the elastic sheet main body, a plurality of positioning bulges are arranged on the periphery of the outer side of the inner ring of the knob, and the positioning bulges are inserted into the positioning holes in a matched mode.

7. The ultrasonic surgical blade of claim 1, wherein: the knob inner circle has the regulation part that is located anterior, and certainly the installation department that the regulation part extends backward, the installation department can install with relatively rotating on the handle shell, elastic component reaches the knob outer lane is all installed on the regulation part.

8. The ultrasonic surgical blade of claim 1, wherein: the knob is characterized in that a plurality of positioning grooves are formed in the circumferential portion of the inner side of the knob inner ring, the positioning grooves extend from front to back, an outer pipe joint is fixedly arranged at the rear portion of the outer pipe, a plurality of convex ribs extending in the front-back direction are arranged on the circumferential portion of the outer side of the outer pipe joint, and the convex ribs are correspondingly clamped in the positioning grooves in a matched mode.

9. The ultrasonic surgical blade of any one of claims 1 to 8, wherein: the front portion of knob inner circle is provided with along a plurality of open slots of circumference interval distribution, every the open slot radially runs through the lateral wall of knob inner circle and runs through the front portion of knob inner circle, the front portion of knob inner circle still is provided with spacing boss, the knob outer lane cover is established the front portion of knob inner circle is located the rear of spacing boss.

10. The ultrasonic surgical blade of claim 9, wherein: the cutter further comprises a cutter protecting sleeve which can be sleeved on the periphery of the outer side of the outer tube in a relatively rotating mode, the periphery of the inner side of the cutter protecting sleeve and the periphery of the outer side of the outer tube are arranged in a sealing mode, and the cutter protecting sleeve and the knob outer ring are fixed mutually and connected mutually in a sealing mode.